[PATCH] D28219: [X86] Attempt to pre-truncate arithmetic operations if useful

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon updated this revision to Diff 82926.
RKSimon added a comment.

Updated based on Elena's feedback


Repository:
  rL LLVM

https://reviews.llvm.org/D28219

Files:
  lib/Target/X86/X86ISelLowering.cpp
  test/CodeGen/X86/avx512-any_extend_load.ll
  test/CodeGen/X86/i64-to-float.ll
  test/CodeGen/X86/vector-trunc-math.ll

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